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QR Challenge: Swilley Chemistry Moles Review

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. 1. Why is the mole used in Chemistry?to count large numbers of small particles
2. 2. The mole is the SI unit for _____________.amount of matter
3. 3. What is one mole equal to?6.02 x 10^23, 22.4L, grams of a substance
4. 4. One mole of Ca and one mole of O have the same ___________ and different ______.same number of particles and different masses
5. 5. What is the mass of one mole of Mg?24.3050g
6. 6. What is the molar mass of one mole of Mg?24.3050g/mol
7. 7. What is the average atomic mass of Mg?24.3050u
8. 8. What is the mass number of Mg?24.3050
9. 9. What is the molar mass of Al2S3?150.155g/mol
10. 10.How many moles are there in 60.5g of Br?0.757mol Br
11. 11.How many grams are there in 3.56mol of K?139g K
12. 12.How many particles are there in 0.56mol of Fe?3.4x10^23
13. 13.How many moles are there in 4.03x10^23particles of Al?0.669mol Al
14. 14.How many liters are there in 0.289mol of N?6.47L N
15. 15.How many moles are there in 78.4L of O2?3.5mol O2
16. 16.How many grams are there in 8.03x10^23atoms of Rb?114g Rb
17. 17.How many particles are there in 456.4g of Si?9.783x10^24
18. 18.How many liters are there in 1,203.4g of B?2,493.4L B
19. 19.How many particles are in 93.7liters of N2 gas?2.52x10^24
20. 20.What is the percent composition of Mg(OH)2?Mg=41.38%, O=55.17%, H=3.45%
21. 21.What is the percent composition of potassium in KCl?K=52.52%
22. 22.What is the formula that has the smallest whole-number ratio of the elements?empirical formula
23. 23.What is the formula that specifies the actual number of atoms of each element in one molecule or formula unit of the substance?molecular formula
24. 24.The molar mass of nicotine is 162.1 g/mol. It contains 74.0% carbon, 8.7% hydrogen and 17.3% nitrogen. Determine nicotine’s empirical formula and molecular formula.empirical=C5H7N and molecular=C10H14N2
25. 25. Phenyl magnesium bromide is used as a Grignard reagent in organic synthesis. Determine its empirical and molecular formula if its molar mass is 181.313 g/mol and it contains 39.7458% C, 2.77956% H, 13.4050% Mg and 44.0697% Br.empirical and molecular are C6H5MgBr

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=1._Why_is_the_mole_used_in_Chemistry?

Question 1 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=2._The_mole_is_the_SI_unit_for______________.

Question 2 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=3._What_is_one_mole_equal_to?

Question 3 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=4._One_mole_of_Ca_and_one_mole_of_O_have_the_same_____________and_different_______.

Question 4 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=5._What_is_the_mass_of_one_mole_of_Mg?

Question 5 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=6._What_is_the_molar_mass_of_one_mole_of_Mg?

Question 6 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=7._What_is_the_average_atomic_mass_of_Mg?

Question 7 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=8._What_is_the_mass_number_of_Mg?

Question 8 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=9._What_is_the_molar_mass_of_Al2S3?

Question 9 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=10.How_many_moles_are_there_in_60.5g_of_Br?

Question 10 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=11.How_many_grams_are_there_in_3.56mol_of_K?

Question 11 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=12.How_many_particles_are_there_in_0.56mol_of_Fe?

Question 12 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=13.How_many_moles_are_there_in_4.03x10^23particles_of_Al?

Question 13 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=14.How_many_liters_are_there_in_0.289mol_of_N?

Question 14 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=15.How_many_moles_are_there_in_78.4L_of_O2?

Question 15 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=16.How_many_grams_are_there_in_8.03x10^23atoms_of_Rb?

Question 16 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=17.How_many_particles_are_there_in_456.4g_of_Si?

Question 17 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=18.How_many_liters_are_there_in_1,203.4g_of_B?

Question 18 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=19.How_many_particles_are_in_93.7liters_of_N2_gas?

Question 19 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=20.What_is_the_percent_composition_of_Mg(OH)2?

Question 20 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=21.What_is_the_percent_composition_of_potassium_in_KCl?

Question 21 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=22.What_is_the_formula_that_has_the_smallest_whole-number_ratio_of_the_elements?

Question 22 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=23.What_is_the_formula_that_specifies_the_actual_number_of_atoms_of_each_element_in_one_molecule_or_formula_unit__of_the_substance?

Question 23 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=24.The_molar_mass_of_nicotine_is_162.1_g/mol.__It_contains_74.0%_carbon,_8.7%_hydrogen_and_17.3%_nitrogen.__Determine_nicotine’s_empirical_formula_and_molecular_formula.

Question 24 (of 25)

 


Swilley Chemistry Moles Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=25. Phenyl_magnesium_bromide_is_used_as_a_Grignard_reagent_in_organic_synthesis.__Determine_its_empirical_and_molecular_formula_if_its_molar_mass_is_181.313_g/mol_and_it_contains_39.7458%_C,_2.77956%_H,_13.4050%_Mg_and_44.0697%_Br.

Question 25 (of 25)